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Quantity
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Meet Ruler: the simple tool that answers the one question everyone eventually asks… “How deep is your hole?”
Ruler gives you clear measurements every single time.
With crisp markings and its very tapered shape, Ruler slides in effortlessly,...
Reviews
5.0
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Interesting experience...only used a couple of times .
Great tool for prep check
M
Mark · March 26, 2026
I am loving this so much! I have tried a few other depth trainers before, but haven't made much progress with them. Got up to 14 inches in on the first session. It also feels amazing. The ruler markings give it an interesting texture.
